Connecter for lubricating apparatus



Patented ug. 9, 1927.

UNHTED STATES ALFRED E. KELLOGG, OF

EL CENTRO, CALIFORNIA.

CONNCTER FOIEl LBRICATING APPARATUS.

Application led June 12,v 1922. Serial No. 567,591.

10 den from View, and protected from dirt or foreign substances.

Other objects are simplicity2 neat appearance, ease of construction and cheapness of manufacture.

Another object is to provide novel means for holding the adapter in engagement with the tip when the parts cooperatewith each other to supply grease to alubricating system.

Other objects, advantages and features of 30 invention may appear from the accompanying drawing, the subjoined detail description and the appended claims.

The accompanying drawing illustrates the invention. t

Figure 1. is an elevation showing the tip in positioi on a fragment of machinery to be Alubricated Fig. 2 is a section on line m2, Fig. 1. F ig. 3 is a perspective view of the adapter 30 detached from the tip.

Fig. 4 is a central vertical section through the adapter and tip showing the parts in position for use.

Fig. 5 is an axial section analogous to Fig.

35 4 with the adapter detached from the tip.

Fig. 6 is a cross section on line me, Fig. 4,

Fig. 7 is a plan view of the tip:

Fig; 8 is an elevation of the tip core.

The tip 1 is adapted to be mounted on a grease cup or attached to .the inlet of a lubricating system, to receive grease under pressure from an adapt-er2 which may be dctachably secured to said tip. The tip 1 comprises a cylindrical sleeve or closure 3 4" .which is slidably and rotatably mounted on the stationary conducting core 4 which is threaded at one end as at 5 for connection with the grease hole a of an oiling system.

The core 4 is provided with a shoulder 6 that serves as a stop for the inturned edge 7 of the sleeve 3 which is enlarged at its lower end to receive said shoulder G'and to form a spring receiving chamber. An expanding spring 8 encircling the upper part of the core 4 in said spring receivingr chamber and operating between the shoulder 6 and Washer 9 which latter bears against a liber washer 9 fitted to shoulder 10 in the sleeve 3, yieldingly holds the sleeve 3 in inlet closing position as shown in Figs. 1 and 2 Where it is shown as closing a plurality of transverse grease admitting inlets or holes 11 that communicate with -the bore 12 of the core 4 which extends longitudinally of the core and is open at the periphery of the core a short distance from the upper end of said core.

The core 4 is also provided with a. wrench seat. 13 for mounting the tip.

The end 14 of adapter shell 2 has an interior enlargement 15 to i'orm aV seat 16 for the retaining plate 17; also fitted into the enlargement. 15 are the end plates 18 between which and the plate 17 is interposed a flexible packing 19; and through these. plates and packing is an opening through which are eX- tended the flexible tube 20 and metallic reinforcing tube 21, which encases the flexible tube 20. The tube 20 is preferably of annealed copper, and is adapted to be connected to a` grease gun containing a supply of grease.

Tube 2O has an enlarged end 22 that is fitted to the bottom of plate 17 so that the tube will be anchored inf the adapter shell 2.

The end 14 of the adapter is threaded to receive the cap 23 which is provided with a central opening adapted to tit over the flexible tubes 20, 21; and extendingupwa'rd from `the cap 23 and integrally connected thereto is a cylindrical reinforcing extension 24 that surrounds' a portion ot the tubes 20, 21. The cap 23 when threaded onto the shell 2 compresses the .fiexible packing against the plate 17.

The connection oi tube 20 to the cap 23 and associated parts is such as to prevent leakage of a lubricant from the end 14 of the adapter 2; and such connection permits the adapter to be turned on the tube to attach it to the tip 1.v

A leather washer 25 frictionally engages the inner wall ot the adapter shell 2 and is adapted to be forced against the closure 3 when the vtip and adapter are connected together, by means of the spring 26 which is mounted between the retaining plate 1T and a steel washer 27 thatfbearsngainst the leather Washer 25. Said washers 25, 27 are provided with centralv orifices 2S through which the upper end 29 ot the core -4 protrudes when spring` 26 Forces the closure 3 and washers 25, 27 downward. he upper end 29 of the core and the top of the sleeve` 3 are rounded so that foreign substances may be easily wiped off and as shown in Fig. 2, there is no groove at the `iunction of the parts 3 and 29 to form a retainer for such foreign substance. f s,

The leather washer 25 frictionally engag ing-the vshell 2 serves to retain the spring 26 in mounted position when the adapteris disengaged from the tip.

The closure 3is mounted on the core 4 by first inserting in the bore of said closure the libre-washer 9', washer 9 and spring .8, and Vthenso positioning said closure and contained partsv on the core 4 and rolling or otherwise turning in the edge 7 of the closure so that said edge will cooperate with the shoulder 6 to hold the closure in inlet closing position, as shown in Fig. 2.

In practice the adapter will be connected to the tip by first placing it in position s0- that the retainer lugs 30 which are formed as inturned portions of the adapter shell 2, are at right angles to the extensions 31 of the tip, and so thatvthe extensions 31 are adjacent the cutaway portions 32 at the bottom of the adapter shell 2; then the'adapter is forced downward until the end 29 of the tip l enters the sp1-'ing chamber 33 of the adapter 2 a suiicient distance4 so as to uncover the inlets 11; and then the adapter is turned until the sockets 34 on the underside of extensions 3l are seated lover the protrusions 35 formed on the 1ugs30 of the adapter shell'2; and when so seated the adapter is .secured in place on tip l by upward pressure of spring 26, that holds the protrusions 3501i the lugs 30 in the sockets 34.

This connection of the adapter to the tip permits lubricant to be forced through 'the tube 20, chamber 33, inlets through the hole 12 to the inlet a of the oiling system.- A

The leather washer 25 prevents "any lubricant from escaping between it and the sideA wall. of the adapter shell 2. When the adapter is disengaged from the tip, the spring 8 of the tip immediately forces the sleeve 3 'upward Iso as to. automatically close the grease admitting inlets'll, thereby preventing dust and dirt or any foreign substance from getting into the oilingl system.

l.v A connecter for lubricating apparatus, having in combination, an adapterj having a shell; a tip adapted to bel received in the shell of said adapter and comprising a core provided with a ylongitudinal bore, said core having transverse holes communicating with said longitudinal bore, and a sleeve slidab'le on said core and adapted' to close said transverse bholes when the adapter is removed from the tip, said sleeve and core having their upper ends rounded.

l2, A tip for lubricating systems comprisfv ll, and thence ing a core provided with a greaseadmitting inlet g. means arranged around said core and adapted to normally close the grease admitting inlet; and means mounted between said core and said first mentioned means to nor- 3.` A connecter for lubricating apparatus having in combination. an adapter; a `tip comprising a core having a grease inlet and a stop; a closure mounted on said core and being enlarged at one end to receive said stop; means whereby said closure lis depressed so as to expose said grease inlet when cooperating with said adapter, andy means whereby said grease inlet isclosed by said closure when saidtip is disengaged from said adapter.

4. A tip for lubricating systems comprising a core provided with a .shoulder and having a grease inlet; a sleeve encircling said core, accommodating said shoulder with loose play so that the sleeve may be moved along the core, and having an inturned edge to engage the shoulder to prevent withdrawal of said core; said sleeve being adapted to beslid on' said core to open and close the inlet; and a spring to yieldingly hold the sleeve in inlet closing position.

5. The tip set forth havinga core provided with a shoulder and a longitudinal bore and transverse holes open to the bore;

vsaid bore extending from one end only of the core to said inlets; a sleeve slidable over the shoulder and on the core to close the holes when thel sleeve is positioned nearthe closed end of the" core; and-'to open the holes when the sleeve is slid from said closed end; anda lspring operating between said shoulder and sleeve to hold the sleeve normally in A.hole closing position. l g.

G. tip for lubricating systems comprising a core having a grease inlet and a shoulder; a sleeve provided with a shoulder slid# ably mounted on said core and having an inturned edge adapted to engage the shoulder on saidcore; andl means operatin bev tween the shoulder on said core an shoulder on the sleeve to normally hold said sleeve in inlet closing osit-ion. l

7. A connecter for ubricating apparatus, having in combination an adapter having aA shell provided with lugs; a t1p adapted to -mally hold said first mentioned means'in an l .inlet closing position.

the

be received in the shell of said adapter and i the lugs and Vextenhaving in combination an adapter having a shell provided with lugs; av tip adapted to be received in the shell-of said adapter and comprising a core provided with a longitudinal bore; said core having transverse holes communicating with said 'longitudinal bore; means adapted to close said transverse holes when the adapter is removed from the tip;

extensions on said core adapted tobe en gaged by said lugs; and means adapted to move said closure means so as to open said transverse holes when the lugs and exten*` sions are in engagement, said last mentionedA means also being adapted to holdsaid lugs and extensions in frictional engagement.

9. A connecter for lubricating apparatus,

` comprising an adapter having a shell provided at one endwith a seat; a-retaining plate in said seat; a exible packing; a cap threaded on said shell and adapted to compress the packing onto said plate; a leather Washer in said shell; a spring between said cap, packing and plate and adapted to be connected to a supp'ly of grease; a tip connected to a part to be lubricated andadapted to be received in said shell; and extensions on said tip to be engaged by said lugs. In testimony whereof, I have hereunto set my hand at El Centro, California, this 2nd day of June, 1922.

^ ALFRED E. KELLOGG. 

